Repiping and Pipe Replacement in Dubai: When to Stop Patching
Repiping means replacing a property's water supply pipes, whether that's one run, one room or the whole system, instead of repairing leaks one at a time. In Dubai it's most often done to retire ageing copper or galvanised steel in favour of PPR or PEX. A well-planned repipe can usually be routed so fewer tiles get broken than the leaks were already costing you.
We replace supply pipework in apartments, townhouses and villas using PPR and PEX, including a villa's underground main from the meter to the tank, by open trench or no-dig methods. This page covers when replacement makes sense, how it's done in an occupied home, and what it costs. If you have a single leak to fix, start with our pipe leak repair page instead.
PPR+PEX
Both installed, chosen per route
1.5×
Pressure test before walls close
AED 800+
Single-run replacement
Signs Your Supply Pipes Are Near the End
The main signs are discoloured water on the first draw, grit in aerators, staining at joints, pressure falling slowly over years, repeat pinhole leaks, and a water meter that moves with every tap closed. One sign alone is worth a check. Two or more together usually mean it's time to price replacement rather than repair.
Brown or rusty water on the first draw
Water that runs discoloured for a few seconds after sitting overnight, then clears, points to internal corrosion in galvanised steel. If it happens only on the hot side, the water heater is also a suspect, so we check both.
Grit and flakes in aerators and shower heads
Rust flakes or scale fragments that keep clogging the same outlets are pieces of the pipe's inside surface arriving at the tap.
Green or dark staining at copper joints
Staining at exposed joints under sinks or at the heater means water has been weeping or the metal is corroding. Both get worse, not better.
Pressure falling over years, not overnight
A slow decline across several outlets suggests the bore is narrowing, which is typical of galvanised steel. A sudden drop is more often a valve, a pump or a leak. Our low-water-pressure page explains how to tell them apart.
Repeat pinhole leaks
The clearest sign on copper. Two unrelated pinholes within a year means the wall is thinning along the run.
A meter that moves with everything closed
Some leak is feeding into the walls, slab or ground. On its own this calls for detection first, but alongside the signs above it usually points to a system near the end of its life.
Before you decide anything, rule out the simpler causes. For pressure, see our low water pressure diagnosis. For hard-water scale at taps and shower heads, which is common in Dubai and not a pipe failure, see our page on water softeners and filtration.
Repair or Repipe? Where the Line Sits
Repair is the right call when a leak is isolated: one failed joint, one nail through a pipe, one corroded fitting. Repiping becomes better value when leaks keep coming from the same system, because every repair opens another wall while the pipe that caused the problem stays in place. Our working rule: once ageing copper or galvanised steel has a second unrelated leak within a year, it's time to price a repipe.
The reason is how each material fails. A pinhole in copper is the visible end of a wall that has been thinning from the inside along the whole run, which our guide to pipe age in Dubai buildings explains in detail. A single failed PPR joint usually traces back to how that one joint was made. Fix it properly and the rest of the system is no more likely to fail than before.
| Situation | Usually | Why |
|---|---|---|
| One leak on PPR or PEX with a clear cause (a drill hit, one bad joint) | Repair | An isolated fault; the rest of the system isn't affected |
| First pinhole leak on copper | Repair, then watch | It may be a local defect. A second leak changes the picture |
| Second or third pinhole on copper within a year | Section or full repipe | The pipe wall is thinning along the whole run, so more leaks are coming |
| Galvanised steel with rusty water or falling flow | Repipe | Internal corrosion narrows the bore and doesn't reverse |
| Renovating a bathroom or kitchen anyway | Repipe that room | The walls are already open; new pipe costs little next to the tiling |
| Hot lines failing, cold lines fine | Hot-side repipe | Heat speeds up both copper wear and joint failure |
| Several joints failing from the same original fit-out | Section repipe | A workmanship problem that will repeat at other joints |
One leak on PPR or PEX with a clear cause (a drill hit, one bad joint)
- Usually
- Repair
- Why
- An isolated fault; the rest of the system isn't affected
First pinhole leak on copper
- Usually
- Repair, then watch
- Why
- It may be a local defect. A second leak changes the picture
Second or third pinhole on copper within a year
- Usually
- Section or full repipe
- Why
- The pipe wall is thinning along the whole run, so more leaks are coming
Galvanised steel with rusty water or falling flow
- Usually
- Repipe
- Why
- Internal corrosion narrows the bore and doesn't reverse
Renovating a bathroom or kitchen anyway
- Usually
- Repipe that room
- Why
- The walls are already open; new pipe costs little next to the tiling
Hot lines failing, cold lines fine
- Usually
- Hot-side repipe
- Why
- Heat speeds up both copper wear and joint failure
Several joints failing from the same original fit-out
- Usually
- Section repipe
- Why
- A workmanship problem that will repeat at other joints
What patching costs over a year
A concealed wall repair typically costs AED 400 to 1,200 before any retiling. Three of them in the same bathroom in a year come close to the AED 2,500 to 5,500 it costs to repipe that bathroom's supply. And after the repipe, you stop waiting for the fourth.
What's in Your Walls: GI, Copper, PPR or PEX
The pipe material in a Dubai property usually follows its build date: galvanised steel or early copper before the mid-1990s, copper through to the mid-2000s, and PPR or PEX since around 2016. You can often confirm it in minutes by looking under the kitchen sink or at the water heater connections.
- Before the mid-1990s: mostly galvanised steel or early copper.
- Mid-1990s to mid-2000s: mostly copper.
- Since around 2016: PPR or PEX.
The years in between are mixed. Renovations override the building date, so check what's in the walls before planning anything.
You can usually see a sample without opening anything. Good places to look:
- under the kitchen sink
- at the water heater connections
- behind a bathroom access panel
- in a villa's tank or pump room
| Material | How to recognise it | Typical in Dubai |
|---|---|---|
| Galvanised steel (GI) | Dull grey metal with threaded joints, often with rust staining at the threads | Most common in buildings from before the mid-1990s |
| Copper | Reddish-brown pipe, green or dark staining at joints, soldered or pressed fittings | The default from the mid-1990s to the mid-2000s |
| PPR | Rigid white, green or grey plastic with fused socket joints and a small ring of melted plastic at each joint | Increasingly common from the mid-2000s; standard since around 2016 |
| PEX | Flexible plastic, often white, red or blue, joined with metal crimp rings or press sleeves | Common in retrofits and villa installations |
Galvanised steel (GI)
- How to recognise it
- Dull grey metal with threaded joints, often with rust staining at the threads
- Typical in Dubai
- Most common in buildings from before the mid-1990s
Copper
- How to recognise it
- Reddish-brown pipe, green or dark staining at joints, soldered or pressed fittings
- Typical in Dubai
- The default from the mid-1990s to the mid-2000s
PPR
- How to recognise it
- Rigid white, green or grey plastic with fused socket joints and a small ring of melted plastic at each joint
- Typical in Dubai
- Increasingly common from the mid-2000s; standard since around 2016
PEX
- How to recognise it
- Flexible plastic, often white, red or blue, joined with metal crimp rings or press sleeves
- Typical in Dubai
- Common in retrofits and villa installations
Finding two materials is common and not a problem in itself. It usually means a previous repair or renovation replaced part of the system. What matters is the condition of the older part.
PPR vs PEX vs Copper for a Dubai Repipe
For most Dubai repipes we use PPR for rigid runs in walls, risers and plant rooms, and PEX where the route bends or has to be pulled through tight spaces. Both resist scale and internal corrosion far better than copper. Copper still has a place on short exposed runs. Galvanised steel shouldn't go back in.
| PPR | PEX | Copper | |
|---|---|---|---|
| How joints are made | Heat fusion; the joint becomes one piece | Crimp or press fittings | Soldered, brazed or press fittings |
| Hot water | Good in the right pressure class | Good; tolerates movement | Good |
| Sunlight (rooftops) | Degrades unless sleeved, wrapped or shaded | Degrades; must be protected | Unaffected |
| Scale and corrosion | Smooth bore, no corrosion | Smooth bore, no corrosion | Can pit and pinhole with age |
| Thermal expansion | High for plain pipe; composite pipe much lower | High, but flexibility absorbs it | Low |
| Best use in a repipe | Straight concealed runs, risers, plant rooms | Reroutes through ceilings, tight bends, retrofits | Short exposed runs where metal is preferred |
How joints are made
- PPR
- Heat fusion; the joint becomes one piece
- PEX
- Crimp or press fittings
- Copper
- Soldered, brazed or press fittings
Hot water
- PPR
- Good in the right pressure class
- PEX
- Good; tolerates movement
- Copper
- Good
Sunlight (rooftops)
- PPR
- Degrades unless sleeved, wrapped or shaded
- PEX
- Degrades; must be protected
- Copper
- Unaffected
Scale and corrosion
- PPR
- Smooth bore, no corrosion
- PEX
- Smooth bore, no corrosion
- Copper
- Can pit and pinhole with age
Thermal expansion
- PPR
- High for plain pipe; composite pipe much lower
- PEX
- High, but flexibility absorbs it
- Copper
- Low
Best use in a repipe
- PPR
- Straight concealed runs, risers, plant rooms
- PEX
- Reroutes through ceilings, tight bends, retrofits
- Copper
- Short exposed runs where metal is preferred
Mixing materials in one job is normal and often the best design. Two common combinations:
- A PEX reroute through the false ceiling feeding short PPR drops into each wall.
- New PPR joined to an existing copper riser through a brass transition fitting.
What matters is that each joint type is made correctly and pressure-tested. Our page on PPR pipe installation covers the fusion procedure and test figures we work to.
Replace in Place or Reroute Through the Ceiling?
Replacing pipes in their original channels means cutting every wall the old pipe ran through. Rerouting runs the new supply through the false ceiling or along a new path, and drops it into the wall only at each outlet, which usually means far fewer tiles broken. The right choice depends on the ceiling void, how the walls are built, and what the building allows.
When rerouting works best
Most Dubai apartments have gypsum false ceilings in corridors, bathrooms and the kitchen, often with enough void to carry new supply lines. The new pipe runs through the ceiling and drops vertically into the wall behind each mixer, cistern and basin. Instead of chasing every horizontal run, you open one narrow vertical slot per outlet.
The old pipes are disconnected at their source and capped. Where they're exposed or easy to reach, we remove them. Where they're buried in a wall that isn't otherwise being opened, they stay in place, disconnected, so no stagnant water sits in an abandoned branch.
When replacing in place is better
Rerouting isn't always possible. Two common reasons:
- Some bathrooms have no ceiling void, or the void is already full of ducting.
- Concealed shower valves and thermostatic mixers sit inside the wall. If the valve body itself is failing, the wall at that point has to be opened anyway.
On villa ground floors, supply lines often run in the slab. These are usually abandoned and rerouted through walls or the ceiling above, rather than dug out of the floor. Our slab leak detection page explains why opening a slab is the last resort.
What gets opened either way
Every outlet needs a connection point, so expect an opening at each mixer, basin, cistern and heater. We plan openings to land on tile joints where possible, and ask you to find spare tiles from the original batch before work starts. If there are none, we'll tell you which openings will be visible so you can decide whether to retile a full wall instead of patching.
Choosing the Scope: One Run, One Room, Hot Lines or the Whole Home
You don't have to repipe everything at once. The scope should follow where the failures are coming from, from a single failing run up to the whole unit, and the cheapest scope that removes the failing pipe is usually the right one. The four common scopes are:
- a single run
- one bathroom
- the hot-water side only
- the whole unit, when several rooms are affected or the walls are already open for renovation
A single run
One section between two points, such as the feed from a riser to a bathroom, or a corroded stretch behind a kitchen. Right when failures are concentrated in one place.
One bathroom or kitchen
The most common scope, and the natural one when the room is being renovated. Every supply to that room is replaced back to a sound point, then tested.
Hot lines only
Heat accelerates copper wear, so in many older units the hot side fails first. Replacing hot lines from the heater outward fixes the risk without touching healthy cold lines.
The whole unit
For galvanised steel, or copper with failures in several rooms. In an occupied villa we can phase the work by floor so one bathroom stays usable each night.
Before recommending a scope, we pressure-test the existing system. We also look at any pipe we can reach. A copper run that's already been cut out for a repair is useful evidence, because the inside wall shows how much life is left.
Villa Main Supply Line: Meter to Tank
A villa's main supply line runs underground from the DEWA meter to the storage tank, on the property side of the meter. We replace it by open trench where the route runs under soil, and by no-dig methods where it runs under paving, driveways or planting. When it leaks, the signs are:
- a meter that keeps turning with every tap closed
- a tank that refills slowly
- damp or sunken patches along the route
Replacement isn't always needed. If the line is in reasonable condition and the leak is at one point, an underground leak detection survey can locate it for a single excavation and repair. Replacement makes sense when the pipe is old, has failed more than once, or the route has been disturbed and damaged.
| Open trench | No-dig | |
|---|---|---|
| Disruption | A trench along the full route, then backfill and reinstatement | Two pits, one at each end; the ground between stays intact |
| Best for | Routes under soil or garden beds with clear access | Routes under driveways, interlock paving, pool decks or mature planting |
| Limits | Hardscape along the route has to be lifted and relaid | Many bends, rocky ground or crowded services can rule it out |
| What we check first | Route, depth and other services along the line | Same, plus whether a straight bore path or the old pipe can be used |
Disruption
- Open trench
- A trench along the full route, then backfill and reinstatement
- No-dig
- Two pits, one at each end; the ground between stays intact
Best for
- Open trench
- Routes under soil or garden beds with clear access
- No-dig
- Routes under driveways, interlock paving, pool decks or mature planting
Limits
- Open trench
- Hardscape along the route has to be lifted and relaid
- No-dig
- Many bends, rocky ground or crowded services can rule it out
What we check first
- Open trench
- Route, depth and other services along the line
- No-dig
- Same, plus whether a straight bore path or the old pipe can be used
Either way, the new line is a pressure-rated pipe suitable for burial, laid with protective bedding and a marker so future digging finds it before it hits it. It is pressure-tested before backfilling or before the pits are closed. We then check the meter again with every outlet off, to confirm the property side is sealed.
Villa communities often need a permit or NOC for external digging, especially near shared boundaries or landscaping, so build that into the timeline. The same visit is a good moment to check the tank's float valve and the booster pump. A new line that suddenly delivers full flow often shows up a weak component that the old, restricted pipe was hiding.
Permits, Water Shutdowns and Living at Home During a Repipe
In most Dubai towers and master communities, opening walls or ceilings needs written approval from building or community management before work starts. Apartment repipes also need the building team to isolate your unit's supply. Plan for both before you fix dates.
Approvals
Management teams usually ask for a method statement, the contractor's trade licence and insurance, and the planned dates and hours. We prepare the plumbing side of that paperwork. Villa works outside the house, such as trenching a main line, may also need a community NOC.
Working hours
Many buildings restrict drilling and chasing to set hours on set days. We schedule the noisy work (the openings) into those windows. Quieter work, like running and fusing pipe, fills the rest.
Water shutdowns
In towers, the isolation valve for your unit often sits in a shared riser or service room that only the building team can open. We keep the shutdown short by installing and testing the new lines first. The cut-over from old to new pipe then happens in one planned window.
Living through it
With a single-bathroom repipe, the rest of the home works normally. For a whole unit, most days are water-on, with supply interrupted mainly around the cut-over. We cover floors and furniture, and seal doorways around the rooms being opened.
How a Repipe Runs, Step by Step
A repipe is survey, approval, install, test, cut-over and close-up, in that order. The step that protects you most is the pressure test before anything is covered, followed by the photos of each route that you keep afterwards.
- 1
Survey and test the existing system
We identify the pipe material, pressure-test the system, check the failures so far and map route options. You get a written scope with every planned opening marked.
- 2
Approvals and scheduling
We prepare the plumbing paperwork for building or community approval and agree shutdown dates with the building team.
- 3
Protect and open
Floors, furniture and doorways are covered, then openings are made only at the planned points.
- 4
Install the new lines
New PPR or PEX runs are installed, fused or crimped, clipped at the correct spacing, and insulated on hot lines.
- 5
Pressure test before anything is closed
The new system is held at 1.5 times working pressure for at least 30 minutes, and the gauge is photographed at the start and end.
- 6
Cut over and disconnect the old pipes
Supply switches to the new lines, old pipework is disconnected at its source and capped, and the new lines are flushed.
- 7
Close up and hand over
Openings are closed or left ready for your tiler, and you receive photos of every pipe route before it was covered.
Those route photos matter more than they seem. A new pipe is most often damaged by a drill bit or a picture hook going through a wall where nobody knew it ran. With the photos, you, or whoever mounts your next shelf, know exactly where not to drill.
Repiping Cost in Dubai
Repiping in Dubai costs from AED 800 for a single run to AED 18,000 to 40,000 for a whole villa. A bathroom's hot and cold supply typically costs AED 2,500 to 5,500. Where your job sits in each range depends on pipe length, how many outlets there are, access, and whether the route can go through a false ceiling.
| Scope | Typical price |
|---|---|
| Single run replaced or rerouted | AED 800 - 2,500 |
| Kitchen supply lines | AED 1,500 - 3,500 |
| One bathroom (hot and cold supply) | AED 2,500 - 5,500 |
| Hot-water lines only, apartment | AED 2,000 - 5,000 |
| Whole apartment, studio to 2 bedrooms | AED 8,000 - 16,000 |
| Whole apartment, 3 bedrooms and above | AED 14,000 - 25,000 |
| Whole villa, 3 to 5 bedrooms | AED 18,000 - 40,000 |
| Villa main supply line, open trench | AED 3,000 - 9,000 |
| Villa main supply line, no-dig | AED 5,000 - 14,000 |
Single run replaced or rerouted
- Typical price
- AED 800 - 2,500
Kitchen supply lines
- Typical price
- AED 1,500 - 3,500
One bathroom (hot and cold supply)
- Typical price
- AED 2,500 - 5,500
Hot-water lines only, apartment
- Typical price
- AED 2,000 - 5,000
Whole apartment, studio to 2 bedrooms
- Typical price
- AED 8,000 - 16,000
Whole apartment, 3 bedrooms and above
- Typical price
- AED 14,000 - 25,000
Whole villa, 3 to 5 bedrooms
- Typical price
- AED 18,000 - 40,000
Villa main supply line, open trench
- Typical price
- AED 3,000 - 9,000
Villa main supply line, no-dig
- Typical price
- AED 5,000 - 14,000
Included
Survey and written scope, pipe and fittings, installation, the pressure test with a photographed record, disconnecting the old pipes, flushing, and route photos.
Not included
Retiling and false-ceiling reinstatement beyond basic closing, new sanitaryware, and any fees charged by your building or community for permits.
Comparing repiping quotes
Two quotes with the same total can cover very different work. Ask every contractor the same five questions:
- Which pipe material and pressure class will you use?
- Is a recorded pressure test done before the walls close?
- Are the old pipes disconnected at source, or left connected?
- Who handles the permit paperwork?
- What exactly does “making good” include?
A low quote often gets there by leaving one of these out.
Repiping Shops, Offices and Restaurants
Commercial repiping follows the same method as a home, with one difference that shapes everything: the business usually can't close. Work is phased around trading hours, often at night or across weekends, and each phase ends with the premises back on water. New lines are run and tested alongside the old ones, then switched over in short planned windows.
Restaurants and cafés add hot-water demand and grease. The supply side gets hot-rated pipe sized for simultaneous use at sinks, dishwashers and hand-wash stations. Any drainage work is coordinated with the grease trap, because repiping a kitchen is a natural moment to check that the trap and its connections still suit the kitchen. Our commercial plumbing page covers compliance and scheduled maintenance for businesses.
Repiping a Rented or Investment Property
In a rented Dubai property, repiping is normally the landlord's decision and cost. Under Article 16 of Law No. 26 of 2007, maintenance and repair responsibility sits with the landlord unless the tenancy contract says otherwise. Replacing a failing pipe system is the landlord's kind of work, not a tenant's. The practical questions are timing and access.
The simplest time to repipe is between tenancies, when walls can be opened without anyone living around the work. When that isn't possible, a room-by-room scope keeps the unit habitable. So does a reroute through the ceiling, which reduces openings in finished rooms. Agree the dates with the tenant in writing, because repeated emergency leak visits are more disruptive to them than one planned job.
For landlords with several older units, the numbers usually favour planned replacement over waiting. Each emergency leak adds the repair, the damage to the unit below, and often a dispute over who pays for what. Our landlord plumbing maintenance guide covers the wider responsibility split.
Where Repiping Comes Up Most in Dubai
We repipe across Dubai. Demand is heaviest in the older stock: the galvanised and early-copper buildings of Deira, Bur Dubai and Al Qusais, and the copper-era villa communities and towers built in the late 1990s and 2000s. These area pages carry local plumbing notes:
Repiping FAQ
How much does repiping cost in Dubai?
How long does a repipe take?
Can I stay at home while the pipes are replaced?
Is PPR or PEX better for a Dubai repipe?
Do you remove the old pipes?
Will you have to break my tiles?
Do I need permission from my building management?
Can a villa's main water line be replaced without digging up the garden?
Will repiping improve my water pressure?
Should I repipe before renovating a bathroom or kitchen?
Is one leak a reason to repipe?
Stop Paying for the Same Leak Twice
Tell us the property type, what the pipes are made of if you know, and where the leaks have been. We'll survey and pressure-test the system, then give you a written scope and fixed price.